public class Example299 {

        public static void main(String[] args) {
            Example29.Student student = new Example29.Student("zhangsan", 18);
            student.show();
            Example29.UnderGraduate underGraduate = new Example29.UnderGraduate("lisi", 22, "bechalor");
            underGraduate.show();
        }
    }


